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US 5,476,324 AGranted
Spline bearing
AssigneeNippon Thompson Co., Ltd.
InventorSeiji Takei
Life of this patent
Estimating the term…
Abstract
A spline bearing is described which contributes to reducing the size and cost of the apparatus, such as an industrial robot, in which it is incorporated, and moreover, has a high degree of reliability of relative positioning of a spline shaft and outer cylinder. The above-mentioned advantages are obtained by forming a detected portion along a track groove of the spline shaft, and providing a detection device which detects that detected portion on the outer cylinder.
Claims12
A spline bearing comprising:
- a spline shaft in which tracks are formed in the lengthwise direction;
- an outer cylinder able to freely perform relative motion with respect to said spline shaft and having rolling element circulating paths containing load bearing tracks corresponding to said tracks;
- and, a plurality of rolling elements arranged and contained in said rolling element circulating paths, which bear the load while rolling over said tracks;
- wherein, a detected portion is formed in said spline shaft along said tracks, and a detection device is provided on said outer cylinder which detects said detected portion.
1 more element
Dependencies are inferred from the claim text.